SR Inc presents this management best practice research report, executive summary and Summit presentation to address the expressed and growing interest of SRER Members in moving away from project-by project sustainability efforts to develop and implement a portfolio-wide real estate sustainability strategy (PSS) or enhance their existing strategy. Leading real estate (RE) executives across both users and owners find that an organized commitment to corporate sustainability better aligns them with top management, investors, customers, talent, and regulators. Executives find that sustainability is a better way to organize and motivate geographically dispersed, functionally divided staff than the traditional commitment to optimization that disregards environmental considerations beyond minimal compliance measures.